using System;
using System.IO;
using System.Reflection;
using System.Windows.Forms;

namespace MP3TagRenamer
{
  internal partial class About : UserControl
  {
    public About()
    {
      InitializeComponent();

      //  Initialize the AboutBox to display the product information from the assembly information.
      //  Change assembly information settings for your application through either:
      //  - Project->Properties->Application->Assembly Information
      //  - AssemblyInfo.cs
      Text = String.Format("About {0}", AssemblyTitle);
      labelProductName.Text = AssemblyProduct;
      labelVersion.Text = String.Format("Version {0}", AssemblyVersion);
      labelCopyright.Text = AssemblyCopyright;
      labelCompanyName.Text = AssemblyCompany;
      textBoxDescription.Text = AssemblyDescription;
    }

    #region Assembly Attribute Accessors

    public string AssemblyTitle
    {
      get
      {
        // Get all Title attributes on this assembly
        object[] attributes = Assembly.GetExecutingAssembly().GetCustomAttributes(typeof (AssemblyTitleAttribute), false);
        // If there is at least one Title attribute
        if (attributes.Length > 0)
        {
          // Select the first one
          AssemblyTitleAttribute titleAttribute = (AssemblyTitleAttribute) attributes[0];
          // If it is not an empty string, return it
          if (titleAttribute.Title != "")
          {
            return titleAttribute.Title;
          }
        }
        // If there was no Title attribute, or if the Title attribute was the empty string, return the .exe name
        return Path.GetFileNameWithoutExtension(Assembly.GetExecutingAssembly().CodeBase);
      }
    }

    public string AssemblyVersion
    {
      get { return Assembly.GetExecutingAssembly().GetName().Version.ToString(); }
    }

    public string AssemblyDescription
    {
      get
      {
        // Get all Description attributes on this assembly
        object[] attributes = Assembly.GetExecutingAssembly().GetCustomAttributes(
          typeof (AssemblyDescriptionAttribute), false);
        // If there aren't any Description attributes, return an empty string
        if (attributes.Length == 0)
        {
          return "";
        }
        // If there is a Description attribute, return its value
        return ((AssemblyDescriptionAttribute) attributes[0]).Description;
      }
    }

    public string AssemblyProduct
    {
      get
      {
        // Get all Product attributes on this assembly
        object[] attributes = Assembly.GetExecutingAssembly().GetCustomAttributes(typeof (AssemblyProductAttribute),
                                                                                  false);
        // If there aren't any Product attributes, return an empty string
        if (attributes.Length == 0)
        {
          return "";
        }
        // If there is a Product attribute, return its value
        return ((AssemblyProductAttribute) attributes[0]).Product;
      }
    }

    public string AssemblyCopyright
    {
      get
      {
        // Get all Copyright attributes on this assembly
        object[] attributes = Assembly.GetExecutingAssembly().GetCustomAttributes(typeof (AssemblyCopyrightAttribute),
                                                                                  false);
        // If there aren't any Copyright attributes, return an empty string
        if (attributes.Length == 0)
        {
          return "";
        }
        // If there is a Copyright attribute, return its value
        return ((AssemblyCopyrightAttribute) attributes[0]).Copyright;
      }
    }

    public string AssemblyCompany
    {
      get
      {
        // Get all Company attributes on this assembly
        object[] attributes = Assembly.GetExecutingAssembly().GetCustomAttributes(typeof (AssemblyCompanyAttribute),
                                                                                  false);
        // If there aren't any Company attributes, return an empty string
        if (attributes.Length == 0)
        {
          return "";
        }
        // If there is a Company attribute, return its value
        return ((AssemblyCompanyAttribute) attributes[0]).Company;
      }
    }

    #endregion
  }
}